Berlin 2015 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 46: P11: Wetting, Micro and Nano Fluidics
CPP 46.7: Poster
Mittwoch, 18. März 2015, 10:00–13:00, Poster A
What controls the wettability of bidisperse bead pack? — •Robabeh Moosavi1, Julie Murison1, Thomas Hiller1, Martin Brinkmann1,2, and Matthias Schröter1 — 1Max-Planck Institute for Dynamics and Self-Organization, Göttingen, Germany — 2Universität des Saarlands, Saarbrücken, Germany
We report experiments on liquid two-phase flow in bidisperse bead packs. The bidisperese bead pack consists of small and large beads which are either oil wetting or water wetting. The aim of this work is to understand which property of the prepared sample determines its average wettability and how this is linked to the residual oil saturation. To characterize the different samples we measure the capillary pressure saturation curves (CPSC) where the sample is alternately invaded by water and oil. In addition to the CPSC experiments we also carried out x-ray tomography and numerical simulations of two-phase flow with wetting using multi-particle collision dynamics (MPCD). So far, the comparison of the different methods indicate that segregation of beads in the CPSC experiment may have an effect on the determination of the average wettability of the sample.